Evolutionary BiologyOxford University Press, Incorporated, 1979 - 565 pagine Futuyma (ecology and evolution, SUNY Stony Brook) covers such subject areas as phylogeny, paleobiology, genetic mechanisms of change and speciation, character evolution, the theory of processes and macroevolution, and new molecular perspectives. Numerous line drawings, charts, diagrams, and maps are provided. Annotation copyrighted by Book News, Inc., Portland, OR |
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Pagina 314
... homozygotes , of which 1 survives ; 2pq is in heterozygotes , of which 1 -s survives ; and q2 is in A'A ' homozygotes , of which a relative fraction 1 survives . Thus p2 ( 1 s ) + 2pq ( 1 − s ) + q2 ( 1 ) 1s ( 1 - q2 ) is the surviving ...
... homozygotes , of which 1 survives ; 2pq is in heterozygotes , of which 1 -s survives ; and q2 is in A'A ' homozygotes , of which a relative fraction 1 survives . Thus p2 ( 1 s ) + 2pq ( 1 − s ) + q2 ( 1 ) 1s ( 1 - q2 ) is the surviving ...
Pagina 319
... homozygote , both alleles are lost by the death or inferior repro- duction of homozygotes , but they are retained by the surviving het- erozygote ; thus both persist in the population . If the relative fitnesses of the three genotypes ...
... homozygote , both alleles are lost by the death or inferior repro- duction of homozygotes , but they are retained by the surviving het- erozygote ; thus both persist in the population . If the relative fitnesses of the three genotypes ...
Pagina 322
... homozygotes so that they maintain higher average fitness in a heterogeneous envi- ronment . Illustrating this point , Dobzhansky and Levene ( 1955 ) tested the viability at several temperatures and on several food media of Drosophila ...
... homozygotes so that they maintain higher average fitness in a heterogeneous envi- ronment . Illustrating this point , Dobzhansky and Levene ( 1955 ) tested the viability at several temperatures and on several food media of Drosophila ...
Sommario
A Synopsis of Evolutionary Theory | 19 |
Heredity and Development | 33 |
The Ecological Context of Evolutionary Change | 51 |
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AA AA AA adaptive adaptive radiation advantageous alleles ancestor arise artificial selection average become behavior biological birds bristle number cent Chapter character characteristics chromosome coefficient complex correlated deleterious depends developmental differentiation distribution diversity Dobzhansky dominant Drosophila ecological effect environment environmental enzyme epistasis epistatic equilibrium evidence evolutionary change evolved example extinction factors females Figure fitness flies fossil record function gametes gene flow gene frequency genetic change genetic drift genetic variation genome genotypes geographic habitats heterozygotes heterozygous homozygotes homozygous host human hybrid inbreeding increase individuals insects interactions less Lewontin linkage disequilibrium loci locus major males mammals mating Mayr mechanisms morphological mutation rates natural selection niche number of species occur offspring organisms overdominance patterns phenotypic phylogenetic plants pollen polymorphic population predators probability protein random rate of evolution recombination reproductive isolation response sexual similar single speciation structure survival sympatric theory tion traits variance vary